Out of the entire assortment of balloons, only one truly catches your eye. It is a giant green balloon, easily twice the size of any of the other, more decorative balloons. While it is shaped like any ordinary round balloon, it makes up for lack of style with sheer size. Having been fascinated with large balloons since you were but a child, you don't hesitate to pick this one, the king of balloons. The vendor smiles enigmatically and hands you the green balloon, admonishing you to hold the string especially tightly.
As you walk away from the stand, you realize just how right the vendor was. The balloon pulls the string far more strongly than any balloon you have ever held before. Just holding it makes your footsteps seem half as heavy as normal. Your palm sweats as you tightly clench the thin string. When you momentarily relax your grasp, the string slips and nearly escapes. You grab the string with your other hand, but you fear that you won't be able to hold it like this forever.